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| 1 | Dynamical model of HEV with two planetary gear units and its application to optimization of energy consumption显示文摘A hybrid electric vehicle(HEV) that uses multiple planetary gear units with clutches as transmission system is advanced for the powertrain performance, because the operation of the clutches can lead to distinct operating modes, and the induced possible operating modes provide additional freedom to deal with the energy optimal control problem. Under each operating mode, the powertrain mechanical system has specific dynamical behavior. In order to develop model-based optimization schemes that can tackle the transient operations of the vehicle, exact dynamical modeling is investigated focusing on a hybrid powertrain system that uses a two-planetary-gear transmission box with two clutches. It shows that according to the states of the two clutches, the powertrain system has the power-split mode, parallel mode and the electric vehicle(EV) mode. Finally, an analysis for the calculation of the desired driving torque and its application to the dynamic programming(DP)-based energy management indicate the significance of the developed exact dynamical models. | Jiangyan ZHANG Shota INUZUKA Takafumi KOJIMA Tielong SHEN Junichi KAKO | 2019 | Science China(Information Sciences)2019，62，12： | 2 |
| 2 | Real-time energy optimization of HEVs under-connected environment: a benchmark problem and receding horizon-based solution显示文摘In this paper,we propose a benchmark problem for the challengers aiming to energy efficiency control of hybrid electric vehicles(HEVs)on a road with slope.Moreover,it is assumed that the targeted HEVs are in the connected environment with the obtainment of real-time information of vehicle-to-everything(V2X),including geographic information,vehicle-to-infrastructure(V2I)information and vehicle-to-vehicle(V2V)information.The provided simulator consists of an industrial-level HEV model and a traffic scenario database obtained through a commercial traffic simulator,where the running route is generated based on real-world data with slope and intersection position.The benchmark problem to be solved is the HEVs powertrain control using traffic information to fulfill fuel economy improvement while satisfying the constraints of driving safety and travel time.To show the HEV powertrain characteristics,a case study is given with the speed planning and energy management strategy. | Fuguo Xu Hiroki Tsunogawa Junichi Kako Xiaosong Hu Shengbo Eben Li Tielong Shen Lars Eriksson Carlos Guardiola | 2022 | Control Theory and Technology2022，20，2： | 2 |
| 3 | Clinical features and progress of ischemic gastritis with high fatalities: Seven case reports显示文摘BACKGROUND Ischemic gastritis is a clinically rare and highly fatal disease that occurs when the hemodynamics of a patient with vascular risk is disrupted.Early diagnosis and treatment are possible only with upper endoscopy after symptom appearance.We report seven cases of ischemic gastritis and its clinical features,prognosis,and indicators that may help in early detection.CASE SUMMARY Of the seven patients,six had vascular risk and five died within 2 wk of diagnosis.Their symptoms included hematemesis and hypotension.Although surgery is a choice for radical treatment,not all patients were tolerant.For such patients,conservative treatment was selected,but all of them died.In contrast,patients who underwent repeat endoscopy showed improved mucosal findings,suggesting that this improvement may not affect prognosis.Some ischemic changes such as wall thickening,mural emphysema,and fluid retention in the stomach were observed before diagnosis through endoscopy and computed tomography(CT).The CT scan can be effective for early detection,and improvement in circulatory failure and aggressive treatment may save the lives of patients with this disease.CONCLUSION The characteristic CT findings enable early detection of ischemic gastritis.Early diagnosis increases the chance of survival if early therapeutic intervention and improvement of circulatory dynamics can be achieved in this highly fatal disease. | Kento Shionoya Akiko Sasaki Hidekazu Moriya Karen Kimura Takashi Nishino Jun Kubota Chihiro Sumida Junichi Tasaki Chikamasa Ichita Makomo Makazu Sakue Masuda Kazuya Koizumi Jun Kawachi ToshitakaTsukiyama Makoto Kako | 2022 | World Journal of Clinical Cases2022，10，24： | 1 |
| 4 | Cyclic moving average control approach to cylinder pressure and its experimental validation显示文摘Cyclic variability is a factor adversely affecting engine performance. In this paper a cyclic moving average regulation approach to cylinder pressure at top dead center (TDC) is proposed, where the ignition time is adopted as the control input. The dynamics from ignition time to the moving average index is described by ARMA model. With this model, a one-step ahead prediction-based minimum variance controller (MVC) is developed for regulation. The performance of the proposed controller is illustrated by experiments with a commercial car engine and experimental results show that the controller has a reliable effect on index regulation when the engine works under different fuel injection strategies, load changing and throttle opening disturbance. | Po LI Tielong SHEN Junichi KAKO Kaipei LIU | 2009 | 控制理论与应用(英文版)2009，7，4： | 1 |
| 5 | SICE benchmark problem:starting speed control of SI engines显示文摘Starting the engine and quickly adjusting the engine speed to the target value after that will always be a challenge for vehicles with an internal combustion engines at development sites in the automotive industry.The SICE Research Committee on Advanced Powertrain Control Theory provided this task as a benchmark problem with the engine model.Just as control developers in the industry are provided actual engines,many of the academic experts have acquired engine models,analyzed behavior and constructed controls,and solved control tasks.We summarize this activity by explaining the methods by many challengers that achieved the target performance. | Junichi KAKO | 2019 | Control Theory and Technology2019，17，2： | 0 |
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